Phosphorus is an essential macronutrient element, but some time causes problems if present in excess. Unlike the enormous molecular and morphophysiological information available in plants regarding phosphate (Pi) deficiency, little is known about the effect of excess Pi on plants, which is indeed essential for its remediation. Here, we have carried out a comparative study of plant molecular responses under excess Pi (20 mM) or without Pi (0 mM) at transcriptome level. The 1.25 mM treatment concentration of Pi used as a control to obtain differentially regulated genes under above mentioned Pi regimes. A novel whole-transcript expression array, i.e. Arabidopsis Gene 1.0 ST Array, was used to perform these experiments. The most distinctly regulated groups of genes represent modulation in ethylene mediated signaling, Fe deficiency response, and root development. We have also identified some defensin like genes, possessing a gibberellic acid regulated domain (GASA like) under excess Pi treatment. Overall, this study will not only help in dissecting the mechanism of plant responses under excess Pi but also provide the clues about the unknown genes involved in phosphorus homeostasis.
Comprehensive study of excess phosphate response reveals ethylene mediated signaling that negatively regulates plant growth and development.
Specimen part
View SamplesGlioblastoma multiforme is the most common and most aggressive type of primary brain tumor. The brain-infiltrative character of glioblastoma makes complete surgical removal of the tumor impossible and neither radiation nor current chemotherapy provide cure. Recent evidence shows that glioblastoma multiforme consists of heterogeneous cell populations which differ in tumor-forming potential. Enriched tumor-initiating capacity has been linked to poorly differentiated glioblastoma cells sharing features with neural stem cells. Thus, these cells are important targets for new therapeutic strategies.
An RNAi screen identifies TRRAP as a regulator of brain tumor-initiating cell differentiation.
Cell line
View SamplesA431 wild-type (wt) cancer cell line is sensitive to treatment with EGFR tyrosine kinase inhibitors (TKIs). By culturing it chronically under gefitinib, it eventually becomes resistant (A431_GR cell). We know of a few proteins involved in this mechanism of drug resistance, but a cDNA exprssion array would add information to other genes that might be involved in this resistance mechanism.
Acquired resistance to EGFR tyrosine kinase inhibitors in cancer cells is mediated by loss of IGF-binding proteins.
Specimen part
View SamplesMammary organoids harvested from ErbB3 DOX-KO mice, which utilize MMTV-Cre transgene expression in the LE to cause genomic recombination at floxed ErbB3 alleles in ErbB3FL/FL were cultured in the presence or absence of doxycycline to induce ErbB3 loss. The gene expression shift following DOX-induced ErbB3 loss in the 3D organoids was examined by microarray.
The receptor tyrosine kinase ErbB3 maintains the balance between luminal and basal breast epithelium.
Specimen part, Treatment
View SamplesMononuclear phagocytes (MPs), including monocytes and macrophages, play complex roles in the pathogenesis of age-related macular degeneration (AMD). We aimed to perform global transcriptome analysis on monocytes from AMD patients to obtain additional insight to the role of MPs in AMD. Peripheral blood was taken from treatment-nave neovascular AMD (nvAMD) patients (n=14), and age-matched controls (n=15). Peripheral blood mononuclear cells (PBMCs) were separated and monocytes were isolated via negative selection. Gene expression was evaluated with Affymetrix Gene1.0 ST microarrays. Statistical/bioinformatics analysis was performed using open sourceware programs.
Transcriptome Analysis on Monocytes from Patients with Neovascular Age-Related Macular Degeneration.
Specimen part, Disease, Disease stage
View SamplesCyclosporin A induces expression of proapoptotic factors when cells are challenged by increased tonicity
Cyclosporin-A induced toxicity in rat renal collecting duct cells: interference with enhanced hypertonicity induced apoptosis.
Specimen part, Treatment
View SamplesA series contains a set of transcript intensity values measured by Affymetrix microarray.
Systems-level analysis of cell-specific AQP2 gene expression in renal collecting duct.
Sex, Specimen part
View SamplesThis series of microarray data contain transcript intensity of mpkCCD cells.
Systems-level analysis of cell-specific AQP2 gene expression in renal collecting duct.
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View SamplesFreshly isolated rat kidney proximal tubules were subjected for transcript profiling.
Systems-level analysis of cell-specific AQP2 gene expression in renal collecting duct.
Sex, Specimen part
View SamplesFreshly isolated rat kidney medullary thick ascending limbs were subjected for transcript profiling.
Systems-level analysis of cell-specific AQP2 gene expression in renal collecting duct.
Sex, Specimen part
View Samples